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THESE images reveal for the first time what happens when an “antibubble” bursts. An antibubble is a thin, spherical shell of air in a liquid – the exact opposite of a soap bubble, which is a thin, spherical shell of liquid in air. They were first described in the 1930s but have never been well studied. “Most scientists are surprised that they exist,” says Stéphane Dorbolo, at the University of Liège in Belgium. Dorbolo and colleagues used high-speed photography to study how antibubbles are born and die. To make their antibubbles,